New York Yankees closer Mariano Rivera will have offseason surgery on his sore right shoulder but should be ready to throw by spring training.
Manager Joe Girardi said Monday that the procedure will shave down calcification of the A.C. joint on the top of Rivera's shoulder. The surgery hasn't been scheduled, but Girardi said it doesn't appear to be a serious injury and there is no structural damage.
"From what I've learned, he's had it the whole year. Has it progressively got worse over the course of the year? I don't necessarily think so," Girardi said. "I think he just feels more comfortable having it done and then not have to deal with it next year."